Activity monitor



FIG. 1 is a top isometric view of the activity monitor;

FIG. 2 is a bottom isometric view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

CLAIM The ornamental design for the activity monitor, as shown anddescribed.